Fe-base soft magnetic alloy and method of producing same
First Claim
1. A method of producing a Fe-base soft magnetic alloy having the composition represented by the general formula:
-
space="preserve" listing-type="equation">(Fe.sub.1-a M.sub.a).sub.100-x-y-z-α
Cu.sub.x Si.sub.y B.sub.z M'"'"'.sub.α
wherein M is Co and/or Ni, M'"'"' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, and a, x, y, z and α
respectively satisfy 0≦
a≦
0.5, 0.1≦
x≦
3, 0≦
y≦
30, 0≦
z≦
25, 5≦
y+z≦
30 and 0.1≦
a≦
30, at least 50% of the alloy structure being occupied by fine crystalline particles having an average particle size of 1,000Å
or less, comprising the steps of;
(a) rapidly quenching a melt of the above composition to provide an amorphous alloy; and
(b) heat-treating said amorphous alloy at 450-700°
C. for 5 minutes to 24 hours to generate fine crystalline particles having an average particle size of 1000Å
or less in the alloy structure.
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Abstract
An Fe-base soft magnetic alloy having the composition represented by the general formula:
(Fe.sub.1-a M.sub.a).sub.100-x-y-z-α-β-γ Cu.sub.x Si.sub.y
Bz M'"'"'.sub.α M".sub.β X.sub.γ
wherein M is Co and/or Ni, M'"'"' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, M" is at least one element selected from the group consisting of V, Cr, Mn, Al, elements in the platinum group, Sc, Y, rare earth elements, Au, Zn, Sn and Re, X is at least one element selected from the group consisting of C, Ge, P, Ga, Sb, In, Be and As, and a, x, y, z, α, β and γ respectively satisfy 0≦a≦0.5, 0.1≦x≦3, 0≦y≦30, 0≦z≦25, 5≦y+z≦30, 0.1≦α≦30, β≦10 and γ≦10, at least 50% of the alloy structure being fine crystalline particles having an average particle size 1000 Å or less. This alloy has low core loss, time variation of core loss, high permeability and low magnetostriction.
59 Citations
6 Claims
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1. A method of producing a Fe-base soft magnetic alloy having the composition represented by the general formula:
-
space="preserve" listing-type="equation">(Fe.sub.1-a M.sub.a).sub.100-x-y-z-α
Cu.sub.x Si.sub.y B.sub.z M'"'"'.sub.αwherein M is Co and/or Ni, M'"'"' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, and a, x, y, z and α
respectively satisfy 0≦
a≦
0.5, 0.1≦
x≦
3, 0≦
y≦
30, 0≦
z≦
25, 5≦
y+z≦
30 and 0.1≦
a≦
30, at least 50% of the alloy structure being occupied by fine crystalline particles having an average particle size of 1,000Å
or less, comprising the steps of;(a) rapidly quenching a melt of the above composition to provide an amorphous alloy; and (b) heat-treating said amorphous alloy at 450-700°
C. for 5 minutes to 24 hours to generate fine crystalline particles having an average particle size of 1000Å
or less in the alloy structure. - View Dependent Claims (2, 3)
-
-
4. A method of producing an Fe-base soft magnetic alloy having the composition represented by the general formula:
-
space="preserve" listing-type="equation">(Fe.sub.1-a M.sub.a).sub.100-x-y-z-α
-β
-γ
Cu.sub.x Si.sub.y B.sub.z M'"'"'.sub.α
M".sub.β
X.sub.γwherein M is Co and/or Ni, M'"'"' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, M'"'"' is at least one element selected from the group consisting of V, Tr, M, Al, elements in the platinum group, Sc, Y, rare earth elements, Au, Zn, Sn and Re, X is at least one element selected from the group consisting of C, Ge, P, Ga, Sb, In, Be and As, and a, x, y, z, α
, β and
γ
respectively satisfy 0≦
a≦
0.5, 0.1≦
x≦
3, 0≦
y≦
30, 0≦
z≦
25, 5≦
y+z≦
30, 0.1≦
α
≦
30, β
≦
10 and γ
≦
10, at least 50% of the alloy structure being occupied by fine crystalline particles having an average particle size of 1,000Å
or less, comprising the steps of;(a) rapidly quenching a melt of the above composition to provide an amorphous alloy; and (b) heat-treating said amorphous alloy of 450-700°
C. for 5 minutes to 24 hours to generate fine crystalline particles having an average particle size of 1,000Å
or less in the alloy structure. - View Dependent Claims (5, 6)
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Specification